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Mirrors > Home > MPE Home > Th. List > nn0ssz | Structured version Visualization version GIF version |
Description: Nonnegative integers are a subset of the integers. (Contributed by NM, 9-May-2004.) |
Ref | Expression |
---|---|
nn0ssz | ⊢ ℕ0 ⊆ ℤ |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-n0 12164 | . 2 ⊢ ℕ0 = (ℕ ∪ {0}) | |
2 | nnssz 12270 | . . 3 ⊢ ℕ ⊆ ℤ | |
3 | 0z 12260 | . . . 4 ⊢ 0 ∈ ℤ | |
4 | c0ex 10900 | . . . . 5 ⊢ 0 ∈ V | |
5 | 4 | snss 4716 | . . . 4 ⊢ (0 ∈ ℤ ↔ {0} ⊆ ℤ) |
6 | 3, 5 | mpbi 229 | . . 3 ⊢ {0} ⊆ ℤ |
7 | 2, 6 | unssi 4115 | . 2 ⊢ (ℕ ∪ {0}) ⊆ ℤ |
8 | 1, 7 | eqsstri 3951 | 1 ⊢ ℕ0 ⊆ ℤ |
Colors of variables: wff setvar class |
Syntax hints: ∈ wcel 2108 ∪ cun 3881 ⊆ wss 3883 {csn 4558 0cc0 10802 ℕcn 11903 ℕ0cn0 12163 ℤcz 12249 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1799 ax-4 1813 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2110 ax-9 2118 ax-10 2139 ax-11 2156 ax-12 2173 ax-ext 2709 ax-sep 5218 ax-nul 5225 ax-pr 5347 ax-un 7566 ax-1cn 10860 ax-icn 10861 ax-addcl 10862 ax-addrcl 10863 ax-mulcl 10864 ax-mulrcl 10865 ax-i2m1 10870 ax-1ne0 10871 ax-rnegex 10873 ax-rrecex 10874 ax-cnre 10875 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-3or 1086 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1784 df-nf 1788 df-sb 2069 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2817 df-nfc 2888 df-ne 2943 df-ral 3068 df-rex 3069 df-reu 3070 df-rab 3072 df-v 3424 df-sbc 3712 df-csb 3829 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-pss 3902 df-nul 4254 df-if 4457 df-pw 4532 df-sn 4559 df-pr 4561 df-tp 4563 df-op 4565 df-uni 4837 df-iun 4923 df-br 5071 df-opab 5133 df-mpt 5154 df-tr 5188 df-id 5480 df-eprel 5486 df-po 5494 df-so 5495 df-fr 5535 df-we 5537 df-xp 5586 df-rel 5587 df-cnv 5588 df-co 5589 df-dm 5590 df-rn 5591 df-res 5592 df-ima 5593 df-pred 6191 df-ord 6254 df-on 6255 df-lim 6256 df-suc 6257 df-iota 6376 df-fun 6420 df-fn 6421 df-f 6422 df-f1 6423 df-fo 6424 df-f1o 6425 df-fv 6426 df-ov 7258 df-om 7688 df-2nd 7805 df-frecs 8068 df-wrecs 8099 df-recs 8173 df-rdg 8212 df-neg 11138 df-nn 11904 df-n0 12164 df-z 12250 |
This theorem is referenced by: nn0z 12273 nn0zi 12275 nn0zd 12353 nn0ssq 12626 nthruz 15890 oddnn02np1 15985 evennn02n 15987 bitsf1ocnv 16079 pclem 16467 0ram 16649 0ram2 16650 0ramcl 16652 gexex 19369 iscmet3lem3 24359 plyeq0lem 25276 dgrlem 25295 2sqreultblem 26501 archirngz 31345 dffltz 40387 diophrw 40497 diophin 40510 diophun 40511 eq0rabdioph 40514 eqrabdioph 40515 rabdiophlem1 40539 diophren 40551 etransclem48 43713 |
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